Advance OpenStreetMap surveying with GTA04?
mayeul.kauffmann at free.fr
Sun Mar 18 18:39:27 CET 2012
Thanks a lot ed!
Having a gpx extract is great (I'm currently playing with it).
Yes, 'hdop', 'fix' and 'sat' are the 3 main fields I need for precision.
What is "course"? I found "Instantaneous course at the point" (in
degrees)  but I do not understand.
Anybody could confirm that GTA04 gives this as well? (I've just asked
the gta04-owner list too). Also: What about orientation?
Le dimanche 18 mars 2012 à 17:57 +0100, Ed Kapitein a écrit :
> On 03/18/2012 02:25 PM, Mayeul Kauffmann wrote:
> > Le dimanche 18 mars 2012 à 14:34 +0200, Timo Juhani Lindfors a écrit :
> >> I used another GTA02 to make audio notes and a cheap and small digital
> >> camera to take photos. As long as all clocks are synchronized you can
> >> combine all the data with your netbook later.
> > Thanks a lot Timo! I already do this with my Garmin and gpscorrelate
> > (GNU/GPL), but without HDOP nor heading.
> > Can you save the HDOP  with the GTA02?
> > Do you have access to heading in the command line (with possibility to
> > pipe it)?
> > Thanks!
> > Mayeul
> >  http://en.wikipedia.org/wiki/Dilution_of_precision_%28GPS%29
> Hi Mayeul,
> If, on a GTA02, you use a nmea log and gpsbabel to translate it to gpx
> format, you get:
> <trkpt lat="51.987431167" lon="4.337932667">
> Would that give you all the info you need? HDOP and course are present.
> ( the above is just one sample of a track i walked yesterday, with a GTA02 )
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